Rotax-Owner.com has a great video on carb rebuilds. Watch the video, read the manual and have fun.....it's not too difficult. Oh.....and order your parts ahead of time.
Russ
Rotax-Owner.com has a great video on carb rebuilds. Watch the video, read the manual and have fun.....it's not too difficult. Oh.....and order your parts ahead of time.
Russ
Russ
Model IV Speedster
912UL IVO IFA
RV6A
Needle, Ball and Airspeed
Maybe a little GPS
Have, did and about to
The basic parts came in last week and it is no day for flying today.
Dorsal ~~^~~
Series 7 - Tri-Gear
912 ULS Warp Drive
disassembly went mostly as advertised including damaging the main needle fixation screw looks like I will leave that part assembled.
Dorsal ~~^~~
Series 7 - Tri-Gear
912 ULS Warp Drive
Fin - If you are doing an ultra-sonic cleaning of the bodies of the carbs (standard procedure) do not forget that the ball-bearing blocked passages will need to be re-epoxied in order to prevent air leaks.
This is a commonly overlooked item which causes poor running after a rebuild.
Thanks for the heads up, not doing ultra-sonic at this time as everything looks quite clean (no build up). I am assuming you are referring to the material on the body of the carb covering these passages? some of that flaked off so I was wondering what to replace it with?
Dorsal ~~^~~
Series 7 - Tri-Gear
912 ULS Warp Drive
Unofficially, any fuel proof epoxy will work. (JBWeld)
Another piece of advise, if your floats weigh fine, DO NOT REPLACE THEM. Seriously, if they ain't broke don't replace them!
This is ancient history, but my tendency now would go with the ain't broke advice - with the exception of the diaphragm and other more fragile parts. When I did my overhaul in the old days, the first attempt at a test flight resulted in a very rough running engine with fuel all over the place below the vent tubes. I learned that they had sent another needle version that didn't stop fuel flow into the already "full" float bowls. I replaced with the old needles.and put another 600 hours on the airplane. A note on ultrasonic cleaning. What is being used as the fluid in the ultrasonic bath. The reason I ask is that there are numerous chemicals that can be used that would not harm epoxy but would loosen sediments for rinsing. Is the fluid prescribed by Rotax?